I'm getting ssh key mismatch errors when running qapps. I can't find where to manage the keys. Is there a way to manage ssh keys through netbrain or must it be done manually? If manually, where are the keys located?

The SSH credentials for the Device in NetBrain could be located and modified at the "Shared Device Setting" of each device. if the SSH credential is wrong or the privilege is not enough to execute some CLI commands, please modify the SSH credential at the shared device setting directly, and run Tune to verify.
BTW, the RSA token is not supported.